Free Assets usage and Infringements

Can i create a cinematics or gameplay video with the free assets on marketplace e.g paragon assets and post on youtube and make money from views without any infringements?

Sure! Took a quick look into the FAQ and there is this:

Can I create Unreal Engine 4 videos or streams and use them to generate YouTube ad revenue or Twitch donations?
Yes. You can earn advertising revenue or Twitch donations from Unreal Engine 4 videos and publish to YouTube. No royalty is owed on this revenue.